The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 29, 1986
Filed:
Sep. 12, 1984
Daniel Gross, Carouge, CH;
Claus Dahne, Onex, CH;
Battelle Memorial Institute, Carouge, CH;
Abstract
A method of and an apparatus for determining the location or position of a surface element with respect to a reference which utilizes polychromatic light and with a holographic lens on the light focuses individual wavelengths thereof to respective focal points at one of which the surface element can be located. Light reflected from this surface element is then decomposed into the respective wavelengths and the intensities of these wavelengths are analyzed to determine the wavelength of greatest intensity, this being the wavelength whose focus corresponds to the focus of the surface element. The maximum intensity wavelength is used to determine the position of this focus and hence the position of the surface element with respect to a reference.